Smoke Detector SD20-W-4
Smoke Detector SD20-W-4
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X-Sense

Smoke Detector SD20-W-4

|490 ratings
Smoke Detector SD20-W-4Smoke Detector SD20 W 4X Sense Wireless Smoke Detector Interconnected Alarm Long Range Signal Battery Powered SD20 W 1 PackX Sense 10 Year Battery Smoke Detector Alarm with Photoelectric Sensor ETL Listed SD2L0AX 4 PACKX Sense Smoke Alarm 10 Year Lithium Battery Life Fire Alarm with LED Indicator SD21 5 PackSmoke Detector SD20 W 2X Sense 10 Year Battery Smoke Detector Alarm with Photoelectric Sensor ETL Listed SD2L0AX 2 PACKX Sense Interconnected Smoke Alarm Wireless Long Range Fast Response Battery Powered SD20 W 3 PackX Sense Smoke Alarm 10 Year Battery Life Fire Alarm with LED Indicator SD21 1 PackX Sense Smoke Detector Wireless Interconnected Alarm Long Range Signal Fire Alarm Battery Powered SD20 W 6 PackX Sense Smoke Alarm 10 Year Lithium Battery Life Fire Alarm with LED Indicator SD21 3 Pack
ModelSD20-W
Count Per Pack4

Key item features

  • 【Durable, Heat-Resistant Housingγ€‘οΌšMade from upgraded, high-quality PC material designed to resist heat, high temperatures, and corrosion for long-lasting reliability.
  • UL 217 9th Edition Certification, meeting U.S. safety standards for smoke and carbon monoxide detector.
  • Important Notice: SC06 is a basic standalone alarm. It does not support wireless interconnection, Wi-Fi connectivity, or base station pairing.
  • 2-in-1 Smoke & Carbon Monoxide Protection: One alarm provides reliable protection against both smoke and carbon monoxide, accurately detecting CO from potential household sources.

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Customer ratings & reviews

4.6 out of 5 stars
stars
490 ratings129 reviews
How item rating is calculated
  1. 5 stars81% (395)
  2. 4 stars10% (48)
  3. 3 stars3% (15)
  4. 2 stars2% (9)
  5. 1 star5% (23)
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Showing 1-3 of 129 reviews

Sep 22, 2026
Reviewer name: Beautiful
Top Reviewer
Item details
Model: SD2L0AX
Count per pack: 5
Sold and shipped byX-Sense USA
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

These are great. They were easy to install , has a loud buzzer, so we should be safe now.😁

Helpful?1P8CMXVQIPG920561373779
Oct 14, 2026
Reviewer name: Cheryl
Item details
Model: SD20-W
Count per pack: 6
Sold byX-Sense USADelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Radio wave linking

If my husband can link them anyone can. All working perfectly

Helpful?1P8CMXVQIPG920561373779
Oct 15, 2026
Reviewer name: Monica
Item details
Model: SD2L0AX
Count per pack: 3
Sold byX-Sense USADelivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

So far so good 😊

Helpful?1P8CMXVQIPG920561373779
Current price is Now $75.99
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was $84.99
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Sold and shipped by X-Sense USA
4.711003627569529 out of 5 stars
4.7 stars out of 5, based on 835 seller reviews(4.7)
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Free Holiday returns until Jan 31